I was really tempted to explain in great detail how the low pressure side of my dual stage CO2 system rises a couple PSI before the bottle empties, but instead, I thought I'd point out a pic I took today that I thought turned out pretty well. :) http://www.knology.net/~jwilson/images/crypts.jpg Jon (still not a photographer) Wilson http://www.knology.net/~jwilson/plants.htm